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draw a diagram of what effect NE/Epi has on autorythmic/cardiac contractile cells (if any)

draw a diagram of what effect NE/Epi has on autorythmic/cardiac contractile cells (if any)


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Answer #1

ANSWERS :-

* Epinephrine and norepinephrine are neurotransmitters that act on adrenergic receptors, which include alpha and beta adrenergic receptors.

* Alpha1-receptor stimulation causes constriction of arterioles and veins.

* Beta1-receptor stimulation increases the rate, force of contraction, and conduction velocity of the heart.

*Beta2-stimulation dilates arterioles.

** DIAGRAM :-

Epinephrine /Norepinephrine

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Beta adrenergic receptors

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Activation of adenylate cyclase

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AT(adenosine tri phosphate) -> cAMP( production of cyclic adenosine monophosphate )

Increases the force of contraction resulting increased heart rate, dilation of blood vessels, and break down of glycogen to glucose
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